Development and Demonstration of Improved Truck Ladders

摘要

Analysis of reported injuries for off-highway haul trucks indicated that 42.7 pct were slip and fall, and of these, 34.1 pct occurred mounting or dismounting the machine. Redesign of the lower steps was concluded to provide the most overall improvement for increased safety and accident reduction. Various existing, innovative, and conceptual designs were reviewed and evaluated. The most promising designs were the four-spring-supported lower steps and the center-tube-mounted lower steps. Both steps proved to be viable designs by passing human factors and survivability tests conducted at a large copper mine.